(1) Power: The machines own 6-pin 1394 interface is rated at 1A, have been enough to bring all external hard drives, even desktop drives. 4-pin port is not powered, must be given additional power supply. 1394 interface of notebook PC Card also can not supply power, must be given an extra power supply to PC card or external hard disk.
(2) TI dual-chip is the best in 1394 interface; Ricoh is also very good, but rarely appear in retail Cary, IBM X series of on-board is often Ricoh’s, ALI should also be, VIA relatively general (Most desktop motherboards use this), But relatively speaking, working important than chips.
(3) General 1394 of external hard disk box use Oxford911 bridge chip, is still not seen the shrinking chips. oxford922 is a more excellent IC integrated chip, single-chip used for usb2.0/1394 dual interface, and now there are already some high-end 3.5-inch external hard disk box to use, 2.5-inch have not seen. PL-3507 is an IC design company products in Taiwan, it is also a single-core dual interface, the performance are not yet fully understand.
(4) The biggest advantage of 1394 is the low share of CPU.
